Well technically, you could never, ever spend too much time in Thailand. The country is chock-full of intricate temples, pristine islands, and mysterious caverns.
Here's how to tell if you're turning the corner from Thai tourist to Thai local.
1. You prefer motorbikes to minivans.
In Thailand, you don't have soccer moms: you have fearless and intrepid moto-moms who fit their entire families (babies included!) onto one gas-powered bike. No seatbelts? No problem.
2. You're counting the days till the next full moon.
On the island of Ko Phangan, “full moon parties” are fire-throwing, trance-music-playing ragers that last till the sun comes up. ...you’ve never seen a country watch the sky this hard, just waiting for the next full moon.